Under $300Zoë Chicco 14K Black & White Diamond Stacked Band, $285, available at Zoë Chicco. $300 to $500Loren Stewart Black Diamond & Gold Ring, $315, available at Barneys New York. $500 to $1,000Satomi Kawakita Sweet 10 White Diamond Band, $902, available at OTTE. $1,000 to $2,500Doyle & Doyle Antique Three Stone Diamond Ring, 0.48ct, $1800, available at Doyle & Doyle. $2,500 to $5,000Elizabeth Street Yellow Gold, White Diamond, and Rubies Ring, $4180, available at Love Adorned.